Gasification Reactivity and Pore Structure Development: Effect of Intermittent Addition of Steam on Increasing Reactivity of PKS Biochar with CO2

doi:10.1021/acs.energyfuels.6b02859

GIEC OpenIR > 中国科学院广州能源研究所

	Gasification Reactivity and Pore Structure Development: Effect of Intermittent Addition of Steam on Increasing Reactivity of PKS Biochar with CO2
	Chang, Guozhang; Xie, Jianjun; Huang, Yanqin; Liu, Huacai; Yin, Xiuli; Wu, Chuangzhi
	2017-03-01
发表期刊	ENERGY & FUELS
卷号	31 期号:3 页码:2887-2895
摘要	Intermittent addition of steam was employed to increase the gasification reactivity of palm kernel shell biochar with CO2. The reactivity and variations in pore structures were initially assessed during CO2 and H2O-assisted gasification of biochars in a tube furnace, followed by characterization using thermogravimetric and surface area analysis. A quadratic orthogonal rotation regression combination design was used to investigate the effects of intermittent H2O addition on the total reaction time (t(100%)) of CO2 gasification. The achieving results showed that the formation of micropores with sizes of 0.3 to 1.5 nm was favored by CO, gasification, while the reactivity of biochar was highly correlated with the surface area of micropores of 0.93 to 1.47 nm. A pore expansion effect was the primary phenomenon observed during H2O gasification, while the reactivity of biochar with H2O was closely related to the surface area of pores with specific sizes. CO2 and H2O react with the biochar on separate active sites, and micropores of 0.93-1.54 nm are produced in the early stage of H2O gasification, which enhances CO, gasification. The intermittent addition of H2O increases the reactivity of biochar with CO2, such that the t100% value during CO2/intermittent H2O gasification is 31.89 and 15.80% lower than the values associated with using only CO2 or a simple mixture of CO2 and H2O.
文章类型	Article
WOS标题词	Science & Technology ; Technology
DOI	10.1021/acs.energyfuels.6b02859
研究领域[WOS]	Energy & Fuels ; Engineering
关键词[WOS]	PALM SHELL CHAR ; COAL CHARS ; ELEVATED-TEMPERATURES ; PYROLYSIS CONDITIONS ; CARBON NANOTUBES ; HEATING-RATE ; PART II ; H2O ; PRESSURE ; KINETICS
收录类别	SCI
语种	英语
项目资助者	National Natural Science Foundation of China(51661145022 ; Science and Technology Project of Guangdong Province of China(2014A010106017) ; 51306193)
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000396970400081
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/14095
专题	中国科学院广州能源研究所
作者单位	Chinese Acad Sci, Key Lab Renewable Energy, Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Chang, Guozhang,Xie, Jianjun,Huang, Yanqin,et al. Gasification Reactivity and Pore Structure Development: Effect of Intermittent Addition of Steam on Increasing Reactivity of PKS Biochar with CO2[J]. ENERGY & FUELS,2017,31(3):2887-2895.
APA	Chang, Guozhang,Xie, Jianjun,Huang, Yanqin,Liu, Huacai,Yin, Xiuli,&Wu, Chuangzhi.(2017).Gasification Reactivity and Pore Structure Development: Effect of Intermittent Addition of Steam on Increasing Reactivity of PKS Biochar with CO2.ENERGY & FUELS,31(3),2887-2895.
MLA	Chang, Guozhang,et al."Gasification Reactivity and Pore Structure Development: Effect of Intermittent Addition of Steam on Increasing Reactivity of PKS Biochar with CO2".ENERGY & FUELS 31.3(2017):2887-2895.